I have a Kadet for the CZ75, and Mini-mag has given me my best results, reliability wise. Shooting bulk Federal 36gr copper-plated HP, I could count on 1x-2x stoppages per mag. CCI standard was slightly better. Once I shot about 500rds of Mini-mag, it loosened up and isn't as sensitive. I might get one stoppage every few magazines with bulk ammo now.